Parts for your 2007 Toyota Mark x-Steering bushes

2007 Toyota Mark X steering bushes — what they do and when to replace them

Based on technical literature, steering bushes are absolutely relevant on the 2007 Toyota Mark X (GRX120/125). Toyota’s repair manual for the Mark X (Steering—Rack and Pinion, Power Steering section) and Toyota’s Electronic Parts Catalogue for GRX120 list the rack-and-pinion assembly mounted to the front subframe with rubber bushes, along with an internal rack guide bush. Aftermarket catalogues commonly used in Australia and New Zealand (e.g., Nolathane and SuperPro) also list steering rack mounting bush kits for the GRX120 platform. So this model does use steering bushes, and they’re a normal wear item.

On a 2007 Mark X, the steering bushes secure the rack-and-pinion to the front crossmember while isolating noise, vibration and harshness. When in good nick, they hold the rack exactly where it belongs, keeping toe steady and steering feel crisp. As the rubber ages—heat, oil contamination and rough roads all play a part—the bushes soften or crack. That can show up as a clunk over bumps, a vague on-centre feel, shimmy on corrugations or wandering on the motorway. Left long enough, uneven tyre wear and rapid toe changes can creep in.

As part of routine servicing, it’s smart to have the steering bushes inspected on a hoist every service or two (roughly every 20,000–40,000 km is a handy guide), especially if the car sees hot summers, city kerb knocks or country gravel. A technician will lever-test the rack, look for cracked or oil-soaked rubbers and check the rack guide preload per the Toyota procedure.

When replacement’s due, quality options include genuine-style rubber for factory comfort, or polyurethane for sharper response and durability. Mixing old and new bushes is a no-go, replace as a set. Fitment involves supporting the rack, removing the mounting bolts, pressing out the old bushes and installing the new ones in the correct orientation, then torquing all hardware to the Toyota spec from the Mark X manual. Because any change at the rack can nudge toe, a wheel alignment check is recommended straight after. It’s also a good moment to assess inner and outer tie rod ends, the intermediate shaft joint and front control arm bushes, so the steering feel is restored as a package.

• Key signs: clunks, vague steering, tramlining, uneven front tyre wear
• Service tip: keep oil leaks off the bushes—petroleum swells rubber
• After replacement: verify steering wheel is centred and get an alignment

Popular questions about 2007 Toyota Mark X steering bushes

Does the 2007 Mark X actually have steering bushes?
Yes. Toyota’s GRX120 repair manual and EPC show the steering rack mounted with rubber bushes, and there’s an internal rack guide bush as well. Aftermarket AU/NZ catalogues also supply direct-fit bush kits for this model, which confirms they’re a serviceable part.

How long do the steering bushes last?
Expect anywhere from 80,000 to 150,000 kilometres depending on heat, road quality and fluid leaks. Regular inspections will spot cracking or softness early, especially if the car has seen rough roads or power steering fluid seepage.

Do they need a wheel alignment after bush replacement?
An alignment check is highly recommended. Changing the rack’s mounting compliance can alter toe and steering wheel centring, so verifying alignment right after the job avoids odd tyre wear and keeps the Mark X tracking straight.